(3R,4S)-3-Allyl-1-methoxymethyl-4-(4-methoxy-phenyl)-2-oxo-6-trifluoromethyl-2,3,4,5-tetrahydro-1H-benzo[b]azepine-3-carboxylic acid methyl ester 在
硫酸 、 lithium bromide 作用下,
以
甲醇 为溶剂,
反应 4.0h,
以83%的产率得到(3R,4S)-3-Allyl-4-(4-methoxy-phenyl)-2-oxo-6-trifluoromethyl-2,3,4,5-tetrahydro-1H-benzo[b]azepine-3-carboxylic acid methyl ester